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Select all of the ordered pairs that's are solutions to the equation y=9x-20

User Gravis
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1 Answer

4 votes

The given equation is expressed as

y = 9x - 20

From the given options, we would substitute the value of x and y in each ordered pair. If both sides of the equation are equal, then that ordered pair is a solution.

For x = 5 and y = 25, it becomes

25 = 9 * 5 - 20

25 = 45 - 20

25 = 25

This is a solution

For x = 25 and y = 5, it becomes

5 = 9 * 25 - 20

5 = 225 - 20

5 is not equal to 205

This is not a solution

For x = 10 and y = 70, it becomes

70 = 9 * 10 - 20

70 = 90 - 20

70 = 70

This is a solution

The correct options are A and C

User Torsten Becker
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